EP1422008A1 - Elektrohandwerkzeugmaschine - Google Patents
Elektrohandwerkzeugmaschine Download PDFInfo
- Publication number
- EP1422008A1 EP1422008A1 EP03026679A EP03026679A EP1422008A1 EP 1422008 A1 EP1422008 A1 EP 1422008A1 EP 03026679 A EP03026679 A EP 03026679A EP 03026679 A EP03026679 A EP 03026679A EP 1422008 A1 EP1422008 A1 EP 1422008A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handle
- machine
- inlet
- air
- electric motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
- B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
- B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/008—Cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B9/00—Portable power-driven circular saws for manual operation
Definitions
- the invention is based on an electric hand machine tool, in particular Electric circular saw machine, according to the preamble of claim 1.
- this is used to cool the electric motor required air from a on the output shaft of the electric motor rotatably seated fan wheel sucked in via inlet slots in the machine housing and Blown out again through outlet slots in the machine housing. Flock the fan blades of the fan wheel the trailing edges of the exit slots with high Speed at what a strong noise in an uncomfortable has a high frequency range.
- the electric hand machine tool according to the invention with the features of Claim 1 has the advantage that the removal of the electric motor Exhaust air leaving the hollow auxiliary handle on the one hand the air noise be dampened, especially the uncomfortable high frequency range is lowered, and on the other hand the exhaust air away from the operator to the outside is performed so that it is not blown when working with the machine.
- Machine housing with an air inlet opening for the engine exhaust air Air duct formed, which opens into the inlet of the additional handle. Through this closed air duct, the distance between the fan blades on the Motor shaft seated motor fan and the inlet of the auxiliary handle bridged and already achieved good damping of the flow noise.
- the air duct is helical or spiral-shaped with one towards the inlet of the hollow auxiliary handle steadily increasing clear diameter.
- the channel acts as Relaxation room, which means a large amount of air with reduced Flow rate can be transported what the Noise development significantly reduced again.
- the snail-shaped Training is advantageous in cases where the direction of rotation of the Electric motor and thus that of the motor fan in the opposite direction to that of the tool is.
- the additional handle is or an outlet pipe enclosing an outlet of the additional handle is pivotable educated.
- the outflow direction of the engine exhaust air can thus be set in this way be that it does not flow to the operator unpleasantly in any work situation.
- the additional handle that can be swiveled and locked in the set swivel position additionally made possible by adapting to individual gripping habits of the Operator an individual optimization of the ergonomics of the machine.
- the hollow additional handle formed as a bow handle, which in electric hand machine tools with a rotating tool at least partially covering protective hood with its attaches one end of the handle to the protective hood and to or near its other Handle end on a housing part of the electric motor Machine housing is fixed, with its inlet below the protective hood lies.
- Electric circular saw machine as an embodiment for a general Electric hand machine tool for machining or grinding Workpieces have a two-shell machine housing 10 with a molded handle 11 for guiding and handling the machine and one attached motor housing 12 in which an air-cooled electric motor is included.
- the electric motor drives over a not seen here, single-stage gear to a drive shaft 13 on which a circular saw blade 14 is clamped.
- the circular saw blade 14 is in the upper area of one Protective hood 15 covered, which is screwed onto the machine housing 10.
- the protective hood 15 extends to one with the machine housing 10 connected support plate 16, with which the machine during the sawing process the workpiece is placed.
- the circular saw blade 14 protrudes through the support plate 16 through and depending on the desired depth of cut over this more or less down in front.
- To set the cutting depth of the machine is the Platen 16 by a in the working direction in front of the circular saw blade 14
- Machine housing 10 fixed pivot axis the selected pivot position is fixed by means of an adjusting device.
- One on the support plate 16 arranged, further adjustment device 17 enables by Swiveling the support plate 16 about a parallel to the saw blade level extending pivot axis a cutting angle setting of the machine.
- Bow handle 21 designated additional handle sets with a handle end on the Protective hood 15, runs with one to the axis of rotation of the circular saw blade 14 substantially parallel grip area 211 above the support plate 16 in Distance from this and is with its other handle end on the motor housing 12th established. This is a very solid mechanical connection of the bow handle 21 guaranteed on the machine housing 10.
- the bow handle 21 With the help of the bow handle 21 can the machine is placed very precisely flat on the workpiece and when sawing be held and guided very well with both hands, with the large gripping area the bow handle 21 an ergonomic and safe handling of the machine in ensures all work cases for both right and left-handers. It is also possible to use the machine by means of the bow handle 21 Focus.
- the bow handle 21 is hollow and has one for the interior of the Protective hood 15 open inlet 22 (FIGS. 3 and 4) and one behind the Handle area 211 arranged outlet 23 (FIGS. 1 and 2), which is preferably on or is close to the handle end of the bow handle 21 facing away from the inlet 22.
- the outlet 23 is enclosed by an outlet port 24 which can advantageously be designed to be pivotable.
- the motor housing 12 has air inlet slots 25 (FIG. 2), through which a non-rotatably seated on the output shaft of the electric motor Fan wheel (not shown here) sucks in air.
- the electric motor Air flowing through the fan wheel is used as heat-dissipating motor exhaust air blown out and guided so that they into the inlet 22 of the hollow bow handle 21st flows.
- an air duct 26 is formed in the machine housing 10 widens towards the inlet 22 of the bow handle 21 and opens into the inlet 22 (Fig. 3).
- the air is drawn into a by the fan wheel from inside the electric motor 3 hidden air inlet opening of the air duct 26 is blown in.
- the Engine exhaust air flows, as symbolized by arrow 27 in FIG. 3, through the Air duct 26 and the hollow bow handle 21 and occurs at the outlet 24th enclosed outlet 23 in the bow handle 21 to the outside.
- the outlet port 24 is so aligned that the blow-out direction of the engine exhaust flowing here from Machine operator.
- the outlet port 24 is pivotable executed, so the operator can take the job or to the job Adjust the adjusted air flow direction individually.
- the two-shell machine housing 10 is injection molded from plastic, wherein at least the handle 11 and the air duct 26 are molded on at the same time.
- the bow handle 21 is designed as an insert, can u. U. but also with molded become.
- the helical, towards the inlet 22 of the bow handle 21 Widening air duct 26 is formed in parts on both shells, which are in the Add the shells to the air duct 26.
- the invention is not based on the electric circular saw machine described limited. It can be used with all handheld power tools such as Wall chasing, stone saws, angle grinders, cut-off machines, concrete grinders, Orbital sander, belt sander, drill, hammer drill, hedge trimmer, Stick saw, orbital sander and ⁇ . are used.
- the Electric hand machine tool does not have a protective hood for the tool has the hollow auxiliary handle near the front end of the Machine housing attached and the air duct from the motor housing to Inlet of the hollow auxiliary handle in the machine housing guided accordingly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
Abstract
Description
- Fig. 1
- eine Ansicht einer Elektrohandkreissägemaschine,
- Fig. 2
- eine Draufsicht der Elektrohandkreissägemaschine gemäß Fig. 1 ohne Auflageplatte,
- Fig. 3
- eine Seitenansicht der Elektrohandkreissägemaschine gemäß Fig. 2 nach Entfernung von Schutzhaube und Kreissägeblatt,
- Fig. 4
- eine Seitenansicht der Elektrohandkreissägemaschine gemäß Fig. 1 bei entfernter Schutzhaube für das Kreissägeblatt.
Claims (9)
- Elektrohandwerkzeugmaschine, insbesondere Elektrohandkreissägemaschine, mit einem Maschinengehäuse (10), das einen luftgekühlten Elektromotor aufnimmt, mit einem vom Elektromotor antreibbaren Werkzeug (14), mit einem Handgriff (11) und mit einem Zusatzgriff (21) für eine beidhändige Führung der Maschine, dadurch gekennzeichnet, daß der Zusatzgriff (21) hohl ausgebildet und als Abluftkanal für die den Elektromotor verlassende Abluft genutzt ist.
- Maschine nach Anspruch 1, dadurch gekennzeichnet, daß der Zusatzgriff (21) schwenkbar und in mindestens einer Schwenkstellung verrastbar ausgebildet ist.
- Maschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Zusatzgriff (21) einen am gehäusefernen Griffende angeordneten Auslaß (23) und einen zum Maschinengehäuse (10) hin offenen Einlaß (22) aufweist, der so angeordnet ist, daß die Motorabluft in den Einlaß (22) des Zusatzgriffs (21) einströmt.
- Maschine nach Anspruch 3, dadurch gekennzeichnet, daß der Auslaß (23) von einem Auslaßstutzen (24) umschlossen ist, der vorzugsweise schwenkbar ausgebildet ist.
- Maschine nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß im Maschinengehäuse (10) ein mit einer Lufteintrittsöffnung für die Motorabbluft versehener Luftkanal (26) ausgeformt ist, der im Einlaß (22) des Zusatzgriffs (21) mündet.
- Maschine nach Anspruch 5, dadurch gekennzeichnet, daß sich der Luftkanal (26) zum Einlaß (22) des Zusatzgriffs (21) hin erweitert.
- Maschine nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß bei inverser Drehrichtung von Elektromotor und rotierendem Werkzeug (14) der die Motorabluft führende Luftkanal (26) schneckenförmig ausgebildet ist.
- Maschine nach einem der Ansprüche 5 - 7, dadurch gekennzeichnet, daß das angetriebene Werkzeug (14) von einer Schutzhaube (15) zumindest teilweise abgedeckt ist, daß der Einlaß (22) des Zusatzgriffs (21) in der Schutzhaube (15) angeordnet ist und daß der Luftkanal (26) in der Schutzhaube (15) unmittelbar am Einlaß (22) des Zusatzgriffs (21) mündet.
- Maschine nach Anspruch 8, dadurch gekennzeichnet, daß der hohle Zusatzgriff (21) als Bügelgriff ausgebildet ist, der mit einem Griffende an der Schutzhaube (15) angesetzt und an oder nahe seinem anderen Griffende an einem den Elektromotor aufnehmenden Gehäuseteil (12) des Maschinengehäuses (10) festgelegt ist.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10254578 | 2002-11-22 | ||
DE10254578 | 2002-11-22 | ||
DE10305034 | 2003-02-07 | ||
DE10305034A DE10305034A1 (de) | 2002-11-22 | 2003-02-07 | Elektrohandwerkzeugmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1422008A1 true EP1422008A1 (de) | 2004-05-26 |
EP1422008B1 EP1422008B1 (de) | 2008-01-30 |
Family
ID=32231884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03026679A Expired - Lifetime EP1422008B1 (de) | 2002-11-22 | 2003-11-20 | Elektrohandkreissägemaschine |
Country Status (4)
Country | Link |
---|---|
US (2) | US20040192181A1 (de) |
EP (1) | EP1422008B1 (de) |
CN (1) | CN100446937C (de) |
DE (1) | DE50309102D1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7526866B2 (en) * | 2003-10-31 | 2009-05-05 | Black & Decker Inc. | Variable dust chute for circular saws |
GB0723914D0 (en) * | 2007-12-07 | 2008-01-23 | Johnson Electric Sa | A power tool |
DE102008040017A1 (de) * | 2008-06-30 | 2009-12-31 | Hilti Aktiengesellschaft | Handgeführte Kreissäge |
US8747190B2 (en) * | 2010-04-08 | 2014-06-10 | Mark Smith | Tool for removing grout, mortar and the like |
DE102010041352A1 (de) * | 2010-09-24 | 2012-03-29 | Hilti Aktiengesellschaft | Handgeführtes Elektrowerkzeuggerät mit einem Absaugadapter |
JP5885557B2 (ja) * | 2012-03-28 | 2016-03-15 | リョービ株式会社 | 切断機 |
JP6380931B2 (ja) * | 2014-09-12 | 2018-08-29 | パナソニックIpマネジメント株式会社 | 電動丸鋸 |
CN107855593B (zh) * | 2017-10-20 | 2023-04-11 | 向广宏 | 手持集尘切割机 |
US10875109B1 (en) | 2018-04-30 | 2020-12-29 | Kreg Enterprises, Inc. | Adaptive cutting system |
CN111300323B (zh) * | 2020-03-18 | 2021-07-20 | 山东铭航机械科技有限公司 | 一种具有固定作用的电动扳手 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE644011C (de) * | 1935-03-30 | 1937-04-22 | Carl Sauer | Nutenfraesmaschine |
US4414743A (en) * | 1980-12-11 | 1983-11-15 | Black & Decker Inc. | Circular saw |
DE4003029A1 (de) * | 1990-02-02 | 1991-08-08 | Bosch Gmbh Robert | Handgefuehrte werkzeugmaschine mit radialgeblaese |
EP0979711A2 (de) * | 1998-08-13 | 2000-02-16 | Black & Decker Inc. | Batteriebetriebene tragbare Kreissäge mit Schnittiefeneinstellvorrichtung |
DE19924552A1 (de) * | 1999-05-28 | 2000-11-30 | Hilti Ag | Elektrisch betreibbares Handgerät |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1749705A (en) * | 1928-02-06 | 1930-03-04 | Nathan S Lewin | Abrading device |
US2418429A (en) * | 1942-05-12 | 1947-04-01 | Union Special Machine Co | Sewing machine |
US4281457A (en) * | 1979-10-17 | 1981-08-04 | Black & Decker Inc. | Vacuum-operated cutting tool and system therefor |
SE465960B (sv) * | 1990-05-04 | 1991-11-25 | Atlas Copco Tools Ab | Vibrationsdaempad handhaallen rotationsslipmaskin |
US5595532A (en) * | 1995-10-20 | 1997-01-21 | Waxing Corporation Of America, Inc. | Electrically-powered polisher |
US6447387B1 (en) * | 2001-02-13 | 2002-09-10 | Ming-Qun Tseng | Exhaust assembly for a pneumatic sanding device |
DE20203683U1 (de) * | 2002-03-08 | 2003-07-24 | Bosch Gmbh Robert | Handhobelmaschine |
-
2003
- 2003-11-20 DE DE50309102T patent/DE50309102D1/de not_active Expired - Lifetime
- 2003-11-20 EP EP03026679A patent/EP1422008B1/de not_active Expired - Lifetime
- 2003-11-21 CN CNB2003101240803A patent/CN100446937C/zh not_active Expired - Fee Related
- 2003-11-21 US US10/719,753 patent/US20040192181A1/en not_active Abandoned
-
2005
- 2005-12-27 US US11/318,968 patent/US7207874B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE644011C (de) * | 1935-03-30 | 1937-04-22 | Carl Sauer | Nutenfraesmaschine |
US4414743A (en) * | 1980-12-11 | 1983-11-15 | Black & Decker Inc. | Circular saw |
DE4003029A1 (de) * | 1990-02-02 | 1991-08-08 | Bosch Gmbh Robert | Handgefuehrte werkzeugmaschine mit radialgeblaese |
EP0979711A2 (de) * | 1998-08-13 | 2000-02-16 | Black & Decker Inc. | Batteriebetriebene tragbare Kreissäge mit Schnittiefeneinstellvorrichtung |
DE19924552A1 (de) * | 1999-05-28 | 2000-11-30 | Hilti Ag | Elektrisch betreibbares Handgerät |
Also Published As
Publication number | Publication date |
---|---|
US7207874B2 (en) | 2007-04-24 |
US20040192181A1 (en) | 2004-09-30 |
DE50309102D1 (de) | 2008-03-20 |
US20060141914A1 (en) | 2006-06-29 |
CN1506195A (zh) | 2004-06-23 |
CN100446937C (zh) | 2008-12-31 |
EP1422008B1 (de) | 2008-01-30 |
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